html,
body {
    margin: 0;
    padding: 0;
}

body {
    color: #333;
    background: #fffcf5;
}

h2 {
    text-align: center;
}
.des {
    text-indent: 2em;
    padding: 10px 15px;
    margin: 30px;
    border: 1px dashed #967732;
    background: #fff5eb;
    line-height: 28px;
    color: #666;
}
.tip{
    margin: 30px auto 0;
    width: 1000px;
    line-height:36px;
    font-size:18px;
    word-wrap:break-word;
}
#paper {
    padding: 25px 25px;
    margin: 30px auto 0;
    border: 1px dotted #967732;
    width: 1000px;
    line-height:36px;
    font-size:18px;
    word-wrap:break-word
}
#paper1 {
    padding: 25px 25px;
    margin: 30px auto 150px;
    border: 1px dotted #967732;
    width: 1000px;
    line-height:36px;
    font-size:18px;
    word-wrap:break-word
}
#paper .m_a {
    padding: 5px 15px;
    background: #fdefe0;
}
#paper .m_a:nth-child(2n) {
    background: #fff5eb;
}
.answer_analysis {
    display: block !important;
}